+** Custom file (=custom.el=)
+
+I'm not planning on using the custom file much, but even so, I
+definitely don't want it mixing with =init.el=. So, here, let's give
+it it's own file.
+
+#+begin_src emacs-lisp
+(setq custom-file (expand-file-name
+ "etc/custom.el"
+ user-emacs-directory))
+(load custom-file)
+#+end_src
+
+** Org
+
+#+begin_src emacs-lisp
+(setq org-src-tab-acts-natively t
+ org-src-preserve-indentation nil
+ org-edit-src-content-indentation 0)
+#+end_src
+